如题，因为MCU是3.3V供电的，而电机是24V的，单片机与电机用的是隔离的DCDC模块，两者的参考地是隔离的。现在想通过MCU读出电机的电流。不知是否可以用INA138一类的芯片。如果不能，求推荐。谢谢
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